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First report of phytophthora fruit rot in apple caused by Phytophthora syringae during cold storage in Maule Region, Chile.

Lolas, M. ; Contreras, J. M. ; Méndez, R. ; Cáceres, M. ; Díaz, G. A.

Plant Disease 2016 Vol 100 No. 7 pp. 1507;

Abstract

During 2014 and 2015, in 2 packing houses located at Rio Claro, Maule Region, Chile, a postharvest rot was observed on Jonagold and Pink Lady apple cultivars after 60 days of cold storage at 0°C with less than 0.1% prevalence. Symptoms consisted of light brown skin discolorations with spongy to firm flesh texture, with the pericarp being darker than the advancing zone of infection. The causal pathogen was identified as Phytophthora syringae based on morphological, genetic (ITS and BLAST) and pathogenicity analyses. This is thought to be the first report of fruit rot caused by P. syringae in cold stored apples in Chile.